Air-supplying means for motors.



C F. RGPER. DCU a. @mmm AND w. f. Roma, exscu flNG MEANS FOR MOTORS.

ORS.

Aal',

l /7 k lCUL .lli/:Aw M19 fijo 'and speeds, so that at CHARLES F. ROPER, 0F HQPEBLE, MSSAC F. ROPER, EXECUTRS 0F Sill@ CHARLES E'. ROPER, DECESED,

dill?, 0F MXLFORD,

ASSXGNRS HOPE- BIASSCHUSETT.

Specillcatlon of Letters Eats-nt.

Application le March 8, i935. ere No. 12,623.

To all whom it may concern Be it known that l, CHARLES l1". Ronnie, a citizen of the llnited States, residine at .opedale, county of Worcester, and ltate of Massachusetts, provenient in Air-Supplyingllieans for Motors, ot' which the following description, in connection with the accompanying drei* ings, is a specification, like letters on the drawings representing like parts.

he invention to be hereinafter described relates to combustion engines or motors wherein the fuel is composed of a mixture of air and a combustible fluidi; and more particularly, it relates to the means for com trolling the character of the mixture or tiie proportion of air and fuel composing such mixture'.

In the ordinary operation of a combustion, engine or motor, a mixture of air and fuel is supplied to the cylinder through an intake, and the 'Volume of the supply is controlled 'b a throttle naive, While the character of this mixture or the proportion of air and fuel is controlled by ixed adjustments ot the earbureter. Under varyin conditions of use, the engine will be cal ed upon to operate under diiferent loads, and at diferent speeds, and traverse widely varying char actors oi* roads. It is evident, therefore, that the established proportion of air and fuel, as determined b the'iixed adjustment at the carburetor, will not be suitable to economically respond to these widely varying conditions, because, while a mixture of one proportion of air and fuel may be Well Iadapted for a certain load or speed, it bepoor for other loads times Waste of feel results, and at other times the efficiency of the motor is impaired. In cold Weather, also, difficulty will he experienced in starting the motor on a mixture that might be fairly satisfaetory for ordinary running renditions. I

With these considerations in n'iind, the

comes too rich or too ehy ,he proportion of air and fool :ing the mixture may be readily and l controlled and varied in response to varying conditions, so that economy of fuel l ,umay result and the eiieiencj,"

tor inl j; maintained.

ons features have invented an lmf tion 'engine having sont invention aims to provide meansA The vari of the invention will best be made clear from the following description and accompanying drawing of one forni oi' means for carrying the invention into practical offert, the illustrated details being variable, Within the true scope 'of the invention as delined by the claims.

lin the drawingigs:-h

Figure l is 'View in side elevation and part section., showing' portions or" an automobile provided with a motor or combusthe present invention associated therewith;

Fig. 2 is :in enlarged plan View showing` nortions of the carburetor, intake pipe conecting with the engine, and the present invention applied w the parte;

3 is a Adetached vien showing features of the present invention in elevation sind others in section,` as on the line 3 3, Fi i, 2g s' lig, s is '.r side elevation showing features i' e present invention looking in the' direction of the arrow a, Fig. 2, some of the parte b *rig broken away;

section on the line 6-6, Fig. 4. In explo ation of the present invention, it has been .sho-Wn and described as associated with the motor of an auton'iobile, but it is adapted for in connection with any combustion engine, as those-in motor boats, and other associations.

"Referring to the drawings: l designates the body of automobile or other vehicle mounted upon a frame or running gear, which may be supplied with the usual Wheels, axles, and other structural features common thereto, and being Well understood, need not .be here described. The vehicle may be supplied Witl the usual *steering post `3 and steering wheel l.

ounted upon the trame or running: gear the motor 5, which is of the combustion flis means or carbureter 6 by means of the intake pipe or manifold 7, a throttle valve being provided to control the 'volume of mixture that may Y means through the intake ipe'. to the eingine. .ln the forni throttle stem 3 carries the usual throttle,y

Patented filet, id, Qld

of the inyention illustrated, thev engine connected. to the fuel supplying and has connected thereto anoperating arm 9 by which the throttle may manipulated through a suitable rod 10 'Joined to the arm 9 at 11, and leading to a convenient os'ition within reach of `the operator. In t e illustration, the throttle rod is shown as con-- The fuelsupplying means or .carbureter' 6` is connected to the intake pipe 7 leading to the engine by means of flanges 14 and 15 Aclamped in operative and. assembled relation by suitable fbolts 16 or other means, the construction being such that the suction of the engine may draw from the supply or cai'bureter a volume of mixture determined by the position of the throttle. The present invention contemplates means for altering orchanging the proportion of air and fuel, according to the demands of the condition existing at the time, as will more fully appear; and'while the said means may assume forms, it is desirable various 'that it be suoli that may be readily applied without changing the parts with which' it is associated, and a good practical embodiment of the invention in this respect will now be described. Cast or otherwise formed is a part 17, Fig. 3, provided. with an opening 18 adapted to register with the opening leading from the carbureter tothe intake pipe, and 'having the two side openings 19, 19 through which the bolts 16 may pass. The part 17, thus formed, is adapted to be clamped between the llanges 14 and L5 connecting the lcarburetor and intake pipe, and for identi-- .Iication may behereinafter'referred to as the flange piece.

Extending from the flange piece 17 is a part 20-'having an air passage 21 leading therethrough, and' communicating with thel 5o central o ening 18' of the ange piece, as

at 22. ounted in the part 20 is a handmanipulated valve for controlling the passage ofv air through the passageway 21. This valve may loe-variously formed to dischargeits stated function, but ashereiii shown it is foramcd by a plug 23 tapped or screw-threaded into a socket portion 24, Figs. 4 and 5, and provided'witli a diagonal. air passage 25, Fig. 5, the construction being such that 4upon rotationv of the plug 23, the diagonal j assage 25 may be caused to register more or ess with the passage 21 in'the art 20, or

' such passage 21 may be entirely c osed. A

The plug valve 23 is preferablyarrang'ed 1 -A etv so that itA may be operated by the driver, and

l*passage 21 'above the plug valve'23 by a seone end of to this end the socket portion 24 into which the plug valve is threaded, is inclined to the lane of the liange piece 17, as indicated in lig. 5, ,and the plug valve has projecting therefrom, a stein 26 surmounted by a hand- 70 piece 27, Fig. 1,' in convenient position for operation by the driver. From the construction thus far described, it will be apparent that vby manipulation of the hand-piece 27, the How of `air through the passage 21 maybe 75 re ated asvdesired, or be entirely interiuypted'.. 1n order that the plug valve may not betooV easily turned as by the jar of the machine or vehicle, a spring 28, Fig. 5, is interposed between the lower end of the plug valve 23 and the bot-tornei' the socket 2d, but thisy may not be always necessary. i 4

The part 20'is provided with an extension 29 having a chamber in whichzpis a slide valve 30, said chamber being connected'to ,the

riesof openings 31, Figs. 3, 5 and (Land having an air inlet 32, the construction being such that by movement ofthe. slide valve 30 varying numbers .of the openings'l.y may be placed in communication with the inlet 32 to thereby regilate the amount of air that may pass through the openings 31 into the passage 21.A y

Disposed between the slide valve 3() and 95 the valve chamber isa spring 33 normally acting to' move the valve in a direction to uncover the openings 31, and to limit the maximum movement ofthe slide A valve under the impulse of the spring, a-stop is provided, that vin the form of the invention illustrated consisting of a stem 34 secured to one end of the 'valve and extending through the end wall of the valve chamber Where it is provided with va stop 'pin 105 35, substantially as indicated Lin Fi 3.

The Vpresent invention Contemp ates that the slide valve shall be movable with ,the throttle, so that as the throttle is progressively openedl to the v'position for 'the 110 engine to run at moderate or desired speed, the air controlling slide valve shall like'- vvise be opened to admit more and more air, until the desired speed is reached, at which time theair controlling slide valveevill loe fully opened and further opening ,move-l ment of the throttle will not av valve ,to follow the operating arm 9 until 'the stop 35 meets vthe end .fportion of the valvel .chamber or other fied part.-v By means fof the* adgust'ing screw 36 the relagtion between the throttle and sliding valve .and as it is progressively opened, the spring 33 will cause the slide 12,5

. ted will be progressively increased up to the valve 23 be open,

Lalanne movements may be regulated to fulfil the desired condition, and a set nut 38 may serve to maintain the established relation. In Fig..2, the throttle operating arm 9 is shown in the position it occupies when the throttle4 is closed, and it will be' noted that the slide valve at this'time covers and closes the openings 31, so that even should the plug no air can pass through the passage 21 to theintake pipe.

From the construction described, it will be noted that the amount of air admitted to the intake pipe is directly under the Acontrol of the throttle, so that as the .throttle is progressively opened, the amount of air admitn point of the desired moderate speed, and

thereafterfurther vopening movement of the throttle will not alter the established combastion mixture. It may be desirable at times, owing to the character of the road,

the load upon the engine, or atmospheric conditions, to change the proportion of air and fuel established by the cordinated relation of the throttle andI slide valve movements, and at such times the hand-mani ulated plug valve can be turned to modify the amount 'o'f air admittedby the slide valve. While in Warm weather, a. motor will ordinarily start with the throttle in its established closed position, yet in cold weather it is frequently necessary to further open the throttle. Such openin movement of the throttle, however, woul also open the slide Valve for the admission of air with the rel sult that the mixture wouldenot be Sulliciently rich, but in the present invention by means of the plug valve, the passage 21 may be closed at such times. thereby preventing air admitted by the slide valve from pass`` ing to the intake pipe and weakening the mixture.

An important feature of the present invention, in addition to the characteristics above-described, is that the entire device is self-contained, that is, the flange piece by which the device is adapted to be readily connected with the carbureter and intake pipe, also has fixedly associated therewith the parts containing the-air passages, as Well as the hand-operated and throttle-controlled valves, so that in adapting the device tomotors as at present constructed, it is only necessary to attach the flange piece in position between the flanges of the carburetor and intake pipe. The flange piece and parts containing the air passages are preferably formed as a single casting, and the passa e 21 and openings 31 are bored substantia ly as indicated in the drawing, the exterior portion of'said openings being closed by a plug, such as the screw plug 40, Figs. 2, 4 and 6. l

Obviously, many of the details described as a goed, practical form of the invention may be changed within the true scope oi the actual invention,l the result in any ense being that by the air supply meansA described, economy of Afuel consumption is seemed, and the eliieiency oi' the motor and its operative condition are maintained.

What is claimed is 1. ln a combustion engine, the combina-` tion of a throttle for controlling the volume of mixture admitted to the intake pipe, and air controlling [means comprising a flange piece having an air passage communicating with the intake )ipe and a projecting portion extending rom the lian-ge piece, a valve carried bythe flange' projection for regulating the amount of air admitted through said vpassage to the intake pipe, means cooperating with the throttle automatically to open said valve with the throttle to progressively increase the air supply through said passage to a predetermined point short ci the lull opening,r of the throttle,'adjustable means to var said predetermined point, and 'an additional .valve carried by the iiange projection between the air controlling valve and the intake pipe, and a stem for adjusting the valve at will.

2. A self-contained air controlling device for combustion engines, comprising a flange provided with an opening adapted to be secured between the carburetor and intake pipe leading to the engine and having a projecting,t portion containing an air passage leading to the central opening of the fiange, an air ccmtrollfmgq valve for regulating the amounto air admitted through said passage of the iange projection to the intake pipe, a stem secured to the valve and coperatingr with the throttle to automatically sage to the .intake pipe, means coperating I with the throttle automatically to open said valve to progressively increase the air supply through said passage, an additional valve located in said passage between said air controlling; valve and the intake pipe, and manually operable means for controlling said additional valve to independently regulate the flow oi air from the air admission valve to the intake pipe.

4. ln a combustion enf-une, the eomb1nation of e niemeer adapted te he inserted be tween the carbureter and intake pipe of the of air passing from the slide valve to the 25 engine, said member having an air passage intake pipe.

communicating with the outside air. and the 6. An air supply device for combustion' intake pipe, a valve for regulating the engines, comprising a flan e piece having amount of air admitted through said pasprogecting portions, said ange piece and sage to the intake pipe, means for progres. projecting portions having an air passage, 30 i sively opening said valve automatically on a throttle and its operating means, a slide opening of the throttle, a valve for said pasvalve movable independent of but adaptedsage between said 'first-named valve and the to "be d by the throttle operating intake pipe, and lmeans independently to means at times for controlling the amount of.

control said second-named valve to regulate air admitted'to said air passage, and ahand 35' the amount of air delivered from the irstoperated valve extendin across the air pasnamed valve to the intake pipe. sage leading from the sl ide valve to the in- 5. In a device of the'character described, take pipe for regulating the amount of ,air the combination of a throttle having an opadmitted by the Slide valve that may pass erating arm, a flange piece having an air through said passage. 40v

passage leading to the intake pipe, a slide In testimony whereof, I have signed my valve having an adjustable contact part name to this specification, in the presencefof adapted to be engaged by the throttle oper. two subscribing witnesses. i

ating means at times for controlling the flow CHARLES F ROPER of air through said passage, and a valve inl dependent of the throttle and slidevalve and Witnesses: interposed between the slide valveJ and'in- BERTHA A.W1Lson,

take pipe for regulating at will the amount ETHEL M. RALPHS. 

